Specification: Material:Brass Type : T8 nut Lead Screw Diameter: 8mm Pitch: 2mm Package includes: (Without retail package) 1 x T8 nut SEL♥T8＃nut＃Pitch＃2mm＃Lead＃8mm＃Brass＃T8x8mm＃Flange＃Lead＃Screw＃Nut＃for＃CNC＃Parts＃